Hub construction.



A. J. SPRANGER.

HUB CONSTRUCTION.

APFLlCATlON man APR. 1:. 19m.

rammed 1m. 10, ms.

2 SHEETS-SHEET i.

A. J. SPRANGER. I

HUB CONSTRUCTION- APPLICATION FILED APR. n. 1918.

1 287,493 Patented Dec. 10, 1918.

2 SHEETS-SHEET 2.

ANTHONY J. sramcca, or DETROI memorial HUB consrnuc'rion.

. Specification of Letters Patent.

Patented he... 10, rats;

Application filed April 11, 1918. Serial No. 228,066.

To a whom it may concern:

Be it know u that l, Aiv'ruoxr J. Srnancnn, a citizen of the UnitedStates of America, residing at Detroit. in the county of llayne andState of l\lichigan,'have invented certain new and usefulln'iprovelnents in Hub Constructions, of which the following is aspecification, reference being had therein to the accompanying drawings.

This invention relates to hub constructions for vehicle wheels, and theprimary object of my invention is to provide positive and reliablemeans, in a manner as hereinafter set forth, for securing a demountablewheel on the end of an axle, so that the same maybe easily and quicklyremoved, when it is disired' to substitute another wheeltherefor.

A further object of my invention is to provide a demountable wheel hubconstruction wherein the parts are constructed with a view of reducingthe cost of manufacture and at. the same time retain those features bywhich din-ability. safety, and ease of assembling are secured. With suchends in view, the invention resides in the novel construction to behereinafter referred to and then claimed.

Reference will now be had to the drawings, wherein Figure l isalongitudinal sectional viewof the hub construction, showing the innerlulb partially in elevation;

Fig. 2 is a cross sectional view the line II-II of" Fig. 1; I

Fig. 3 is a view of the outer end of the hub construction, partly brokenaway;

Fig. 4 is a view of the inner end of the hub construction Fig. 5 is aside elevation of the inner hub;

Fig. 6 is a similar view'of a portion of the inner'hub, illustratingslight modification of my invention, and

Fig. 7 is a perspective view of a detached in the drawings, thereference numeral 1 denotes the end of an axle, and fixed thereon by anut 2 or other fastening incans is a tapering inner hub 3, which has theinner end thereof provided with a peripheral flange 4 and lugs 53radiating from said flange.

The outer end of the inner hub 3 terminates in a neck Uhaving one ormore ribs 7 and a tang 8, said tang having the longitudinal roundededges thereof provided with teeth or threads 9. The tang 8 correspondssomewhat to a mutilated bolt, but as shown taken on in Fig. 6, the tangmay be cylindrical and exteriorly screwthreaelcd, as at 10.

The reference numeral 11 denotes an outer hub which may represent thehub of a wheel having wood or wire spokes, and as shown,'.

the inner and outer ends of said outer hub have annular flanges 12 and13 to which are connected wire ,spokes 14. The flange 12 at the innerendof the outer hub has a plurality ot lugs 15 between which extend thelugs 5 of the inner hub 3, so as to establish a. driving relationbetween the inner and outer hubs. I

The reference numeral 16, denotes a retaining ring fixed in the outerend of the outer hub 11-. said retaining ring being re tained in theannular flange 13 by a screw- 17. or other fastening means. Theretaining ring 16 has a concentric circular open' into which extends thecylindrical sins. of a. rotatable cap 20. The cap 20 is rotatable in theouter end of the outer hub lland the inner end of said cap has opposedsegment shaped members 21 with the inner walls thereof provided withthreads or teeth 22,

corresponding in pitch to the threads or teethi) of the inner hub 3. v

The outer hub 11 has one or more grooves 23, to receive the rib 7 of theinner hub 3,

and this rib will correctly position the inner and outer hubs so thatthe lugs 5 and 13 of said hubswill be correctly positioned forestablishing a driving relation between said hubs. The cap 20 providesclearance for the end of the axle -1, and the shank 19 of said cap has arectangular socket 24 adapted to receive a key or wrench to facilitaterotating the cap 20.

The retaining ring 16 has a set screw 25 extending into a segment groove26 in the outer face of the cap 20 and by tightening the set screw 25the cap 20 may be fixed relatine to the retaining ring 16.

With the set screw 25 loose and engaging in one end oftho groove 26, thethreaded members 21 of the ca 20 are out of engagement with the three s9 of the tang 8, that is, the members 21 confront the flat facets of thetang, and the outer hub 11 can be withdrawn from the inner hub 3. It isin this manner that the wheel may be easily and quickl demounted, andwhen the wheel is replac on the inner hub '3, it is only necessary topartially rotate the cap 20 to place the members 21 in engagement withthe threaded portion of the tang 8. The

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movement of the cap 20 is limited by a set screw 25 engaging in theopposite end of the groove 26, also by the threads or teeth of themembers 21 becoming interlocked or wedged against the teeth or threads 9of the tang 8. The set screw 25 may then be tightened to hold the cap 20in its adjusted position. a

In case the inner hub 3 has the tang with peripheral teeth or threads,it is necessar to rotate the cap 20 to draw the outer huh it on to theinner hub, in which instance the groove '26 will be dispensed with andthe screw 25 hind against the fare of the cap 20.

\Vhile in the drawings there are illus trated the preferred embodimentsof my in-.

vention, it is to he understood that the structural elements aresusceptible to such changes as fall within the scope of the a ppendedcl'aim.

What I claim is In a hub construction for deniountable wheels, thecombination with an inner hub having the outer end thereof provided witha threaded tang and a longitudinally disposed rih, an outer hub on saidinner huh and havin its inner end detachably inten locked with the innerend of said inner huh, said outer huh having a groove to receive the ribof said inn r hub, and thereby cora wrench receiving portion extendingthrough said retaining ring opposed threaded members carried by said capadapted to interlock with the threaded tang of said inner hub, and a setscrew" carried by said cap and extending; throughsaid retaining ring andadapted to he fixed relative to said retaining ring to hold said cap inad usted positions.

In testimony whereof I aliix in the presence oi. two witness ANTHONY J.EriPRANGER.

Witnesses ANNA M, Donn, Kann- H, BUTLER.

my signature

